Method and apparatus for treating inorganic gas exhaust from test chamber

Abstract

This invention discloses a method and apparatus for treating inorganic gas exhaust gas from a test chamber, relating to the technical field of exhaust gas treatment. The method includes: collecting inorganic gas from the test chamber to obtain exhaust gas to be treated, and sensing and monitoring the exhaust gas to obtain exhaust gas information before treatment; introducing an exhaust gas evaluation mechanism to evaluate and analyze the exhaust gas information before treatment to obtain an exhaust gas treatment index; determining whether the exhaust gas treatment index exceeds a predetermined limit; if it does, activating a physicochemical dual processor to treat the exhaust gas to obtain exhaust gas to be emitted. This invention solves the technical problems in existing technologies, such as the difficulty in coordinating the discharge and treatment of inorganic gas exhaust gas from the test chamber, and the inability to adaptively adjust treatment parameters according to changes in exhaust gas concentration, resulting in low exhaust gas treatment efficiency, non-compliance with emission standards, and insufficient environmental performance. It achieves the technical effects of intelligent control and precise emission compliance in exhaust gas treatment, improving exhaust gas purification efficiency and environmental performance.

Description

Technical Field

[0001] This application relates to the technical field of exhaust gas treatment, specifically to a method and apparatus for treating inorganic gas exhaust gas discharged from a test chamber. Background Technology

[0002] Ammonia salt gas corrosion test chambers are widely used in electrical and electronic products, materials testing, environmental simulation, chemical synthesis, photovoltaic modules, and other fields. The test chambers simulate a corrosive environment containing ammonia salts to evaluate the corrosion resistance of materials. During operation, a large amount of inorganic gaseous exhaust gas, such as nitrogen oxides (NOx), is generated. x ), sulfur oxides (SO x Inorganic gases such as hydrogen chloride (HCl) and ammonia (NH3) can corrode laboratory facilities and cause serious air pollution if emitted directly without effective treatment. Current research on ammonia salt test chambers mainly focuses on hardware design, such as temperature and humidity control and improving gas concentration accuracy. However, there are significant shortcomings in the efficient and environmentally friendly treatment of exhaust gases. Existing exhaust gas treatment methods, such as physical adsorption, chemical absorption, and catalytic oxidation, suffer from low efficiency, poor adaptability, and high operating costs. Furthermore, they lack the ability to monitor and dynamically control the composition and concentration of exhaust gases in real time, and cannot automatically adjust treatment strategies based on changes in exhaust gas concentration, making it difficult to achieve precise and efficient exhaust gas treatment.

[0003] Therefore, current technologies suffer from several technical problems, including difficulty in coordinating the discharge and treatment of inorganic gas exhaust from test chambers and the inability to adaptively adjust treatment parameters based on changes in exhaust gas concentration. These issues result in low exhaust gas treatment efficiency, non-compliance with emission standards, and insufficient environmental performance. Summary of the Invention

[0004] This application provides a method and device for treating inorganic gas exhaust gas in a test chamber, which solves the technical problems in the prior art, such as the difficulty in coordinating the treatment of inorganic gas exhaust gas in the test chamber and the inability to adaptively adjust the treatment parameters according to changes in exhaust gas concentration, resulting in low exhaust gas treatment efficiency, non-compliance with emission standards, and insufficient environmental performance. It achieves the technical effects of realizing intelligent control and precise emission compliance of exhaust gas treatment, and improving the efficiency of exhaust gas purification and treatment and environmental performance.

[0005] This application provides a method for treating inorganic gas exhaust gas in a test chamber. The method includes: collecting inorganic gas in the test chamber to obtain exhaust gas to be treated, and sensing and monitoring the exhaust gas to obtain exhaust gas information before treatment; introducing an exhaust gas evaluation mechanism to evaluate and analyze the exhaust gas information before treatment to obtain an exhaust gas treatment index; determining whether the exhaust gas treatment index exceeds a predetermined limit; if it exceeds, activating a physical and chemical dual processor to treat the exhaust gas to be treated to obtain exhaust gas to be emitted.

[0006] In a possible implementation, the inorganic gas exhaust treatment method in the test chamber further includes the following steps: monitoring the ammonia concentration of the exhaust gas to be treated using an exhaust gas monitoring sensor to obtain the ammonia concentration before treatment; monitoring the hydrochloric acid concentration of the exhaust gas to be treated using an exhaust gas monitoring sensor to obtain the hydrochloric acid concentration before treatment; the ammonia concentration before treatment and the hydrochloric acid concentration before treatment constitute the exhaust gas information before treatment.

[0007] In a possible implementation, the inorganic gas exhaust treatment method in the test chamber further includes the following steps: extracting the pre-stored treatment weight allocation from the exhaust gas assessment mechanism; using the treatment weight allocation as a calculation coefficient, standardizing the ammonia concentration and the hydrochloric acid concentration before treatment to obtain the exhaust gas treatment index; wherein the calculation coefficient of the treatment weight allocation is less than 1.

[0008] In a possible implementation, the inorganic gas exhaust treatment method in the test chamber further performs the following process: after determining whether the exhaust gas treatment index exceeds a predetermined limit, if it does not exceed the limit, the anti-backflow atomizing spray device in the physical and chemical dual processor is activated to perform primary treatment on the exhaust gas to be treated, thereby obtaining the exhaust gas to be discharged.

[0009] In a possible implementation, the inorganic gas exhaust treatment method in the test chamber further includes the following steps: activating the anti-backflow atomizing spray device in the physicochemical dual processor to perform primary treatment on the exhaust gas to be treated, obtaining primary exhaust gas; activating the ammonium sulfate mother liquor countercurrent spray crystallization device in the physicochemical dual processor to perform secondary treatment on the primary exhaust gas, obtaining secondary exhaust gas; and using the secondary exhaust gas as the exhaust gas to be emitted.

[0010] In a possible implementation, the inorganic gas exhaust treatment method in the test chamber further includes the following treatment: the spray liquid of the anti-backflow atomizing spray device is a predetermined acidic absorbent, and the pH value of the predetermined acidic absorbent is in the range of 2.5 to 3.5; wherein, the preparation method of the predetermined acidic absorbent includes: diluting a predetermined industrial sulfuric acid to a concentration of 13% to obtain a stock absorbent solution; obtaining a predetermined surfactant, and the concentration range of the predetermined surfactant is in the range of 0.1% to 0.3%; and adding the predetermined surfactant to the stock absorbent solution under a predetermined solution temperature condition to obtain the predetermined acidic absorbent solution.

[0011] In a possible implementation, the inorganic gas exhaust treatment method in the test chamber further includes the following treatment: the spray liquid of the ammonium sulfate mother liquor countercurrent spray crystallization device is a predetermined ammonium sulfate solution, and the concentration range of the predetermined ammonium sulfate solution is 15% to 25%.

[0012] In a possible implementation, the inorganic gas exhaust treatment method in the test chamber further includes the following steps: activating an online detector to dynamically and continuously monitor the treatment process of the exhaust gas to be treated, obtaining an online detection timeline; visualizing the online detection timeline to obtain an online detection curve; determining whether the exhaust gas to be emitted meets the predetermined emission constraints based on the online detection curve; if it does, treating the exhaust gas to be emitted; if it does not, activating a fiber demister to remove aerosol particles from the exhaust gas to be emitted.

[0013] In a possible implementation, the inorganic gas exhaust treatment method in the test chamber further includes the following steps: extracting the ammonia concentration time series from the online detection time series; performing polynomial fitting on the scattered ammonia concentration time series to obtain an ammonia fitting curve; extracting the hydrochloric acid gas concentration time series from the online detection time series; performing polynomial fitting on the scattered hydrochloric acid gas concentration time series to obtain a hydrochloric acid fitting curve; the ammonia fitting curve and the hydrochloric acid fitting curve constitute the online detection curve graph.

[0014] This application also provides an inorganic gas exhaust treatment device for a test chamber, the device comprising: a sensing and monitoring module for collecting inorganic gas in the test chamber to obtain exhaust gas to be treated, and sensing and monitoring the exhaust gas to obtain exhaust gas information before treatment; an evaluation and analysis module for introducing an exhaust gas evaluation mechanism to evaluate and analyze the exhaust gas information before treatment to obtain an exhaust gas treatment index; an exhaust gas treatment index judgment module for judging whether the exhaust gas treatment index exceeds a predetermined limit; and an exhaust gas treatment module for activating a physical and chemical dual processor to treat the exhaust gas to be treated to obtain exhaust gas to be emitted.

[0015] The proposed method and apparatus for treating inorganic gas exhaust gas in a test chamber involves collecting inorganic gas within the test chamber to obtain exhaust gas to be treated, and then sensing and monitoring the exhaust gas to obtain pre-treatment exhaust gas information. An exhaust gas evaluation mechanism is introduced to assess and analyze the pre-treatment exhaust gas information to obtain an exhaust gas treatment index. It then determines whether the exhaust gas treatment index exceeds a predetermined limit; if it does, the physicochemical dual processor is activated to treat the exhaust gas to be discharged, yielding the exhaust gas to be emitted. This solves the technical problems in existing technologies, such as the difficulty in coordinating the discharge and treatment of inorganic gas exhaust gas in the test chamber and the inability to adaptively adjust treatment parameters according to changes in exhaust gas concentration, leading to low exhaust gas treatment efficiency, non-compliance with emission standards, and insufficient environmental performance. The method achieves the technical effects of intelligent control and precise emission compliance in exhaust gas treatment, improving exhaust gas purification efficiency and environmental performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments of this disclosure will be briefly described below. Flowcharts are used in this application to illustrate the operations performed by the apparatus according to the embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, various steps can be processed in reverse order or simultaneously as needed. Furthermore, other operations can be added to these processes, or one or more steps can be removed from these processes.

[0017] Figure 1 This is a schematic diagram of the process for treating the exhaust gas from the test chamber provided in an embodiment of this application.

[0018] Figure 2 A schematic diagram of the inorganic gas exhaust treatment device in the test chamber provided in this application embodiment.

[0019] Explanation of reference numerals in the attached diagram: Sensing and monitoring module 10, evaluation and analysis module 20, exhaust gas treatment index judgment module 30, exhaust gas treatment module 40. Detailed Implementation

[0020] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below.

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of this application will be provided in conjunction with the accompanying drawings. The described embodiments should not be considered as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the following description, references to "some embodiments" describe a subset of all possible embodiments. However, it is understood that "some embodiments" can be the same or different subsets of all possible embodiments and can be combined with each other without conflict. The terms "first" and "second" are used merely to distinguish similar objects and do not represent a specific ordering of objects. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or modules not explicitly listed or inherent to these processes, methods, products, or apparatuses. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only.

[0023] This application provides a method for treating the exhaust gas from an inorganic gas chamber, such as... Figure 1 As shown, the method includes:

[0024] Step S100: Collect inorganic gas in the test chamber to obtain exhaust gas to be treated, and perform sensing and monitoring on the exhaust gas to obtain exhaust gas information before treatment.

[0025] Preferably, the inorganic gases generated by the ammonia salt gas corrosion test are collected in the test chamber through the sealed exhaust device or negative pressure suction device to obtain the exhaust gas to be treated, which mainly includes corrosive, toxic or harmful gases such as ammonia (NH3) and hydrogen chloride (HCl). Then, the exhaust gas to be treated is sensed and monitored, that is, the collected exhaust gas is monitored in real time using equipment such as electrochemical sensors, infrared spectrometers, temperature and humidity sensors, and gas chromatographs to obtain key gas information, which may include gas composition, such as the specific types and mixing ratios of NH3 and HCl; concentration data of each gas component, such as the ppm value of NH3 and the mg / m³ value of HCl; physical parameters of the exhaust gas to be treated, such as temperature, humidity, pressure, and flow rate, etc. Finally, a structured parameter set, that is, exhaust gas information before treatment, is obtained, and combined with a gas buffer device such as a gas holder or temporary storage tank, the gas is introduced into the exhaust gas treatment unit for treatment.

[0026] Furthermore, step S100 also includes step S110, monitoring the ammonia concentration of the exhaust gas to be treated using an exhaust gas monitoring sensor to obtain the ammonia concentration before treatment; step S120, monitoring the hydrochloric acid concentration of the exhaust gas to be treated using an exhaust gas monitoring sensor to obtain the hydrochloric acid concentration before treatment; step S130, the ammonia concentration before treatment and the hydrochloric acid concentration before treatment constitute the exhaust gas information before treatment.

[0027] Preferably, the concentrations of ammonia and hydrochloric acid in the exhaust gas to be treated are monitored in real time using exhaust gas monitoring sensors to obtain key data. Specifically, a high-precision ammonia sensor, such as an electrochemical sensor, semiconductor sensor, or infrared absorption sensor, is used to detect the volume fraction or ppm concentration of ammonia generated by the ammonia salt corrosion test in the test chamber in real time to obtain the ammonia concentration before treatment. If the sensor measures an ammonia concentration of 800 ppm, the ammonia concentration before treatment is 0.08%. A hydrochloric acid gas sensor, such as an electrochemical sensor or laser spectrometer, is used to detect the volume fraction or ppm concentration of hydrogen chloride gas generated by hydrochloric acid mist or chlorine-containing corrosive environment in real time to obtain the hydrochloric acid gas concentration before treatment. If the sensor measures an HCl concentration of 5 ppm, the hydrochloric acid gas concentration before treatment is 0.0005%. Finally, the ammonia concentration and hydrochloric acid gas concentration before treatment are combined to form the exhaust gas information before treatment, ensuring that the data accurately reflects the degree of exhaust gas pollution.

[0028] Step S200: An exhaust gas assessment mechanism is introduced to evaluate and analyze the exhaust gas information before treatment, and an exhaust gas treatment index is obtained.

[0029] Step S200 further includes step S210, extracting the pre-stored treatment weight allocation in the exhaust gas assessment mechanism; step S220, using the treatment weight allocation as the calculation coefficient, standardizing the ammonia concentration and the hydrochloric acid concentration before treatment to obtain the exhaust gas treatment index; wherein, the calculation coefficient of the treatment weight allocation is less than 1.

[0030] Preferably, the exhaust gas assessment mechanism is an intelligent strategy for quantifying the degree of exhaust gas pollution. Through multi-parameter weight allocation and standardized calculation, it transforms the monitored pre-treatment exhaust gas information into a quantifiable and comparable exhaust gas treatment index, used to decide whether deep exhaust gas treatment is necessary. Specifically, it extracts the pre-stored treatment weight allocation from the exhaust gas assessment mechanism, that is, it extracts the contribution weights of ammonia and hydrochloric acid gases to environmental pollution based on scientific criteria such as gas toxicity, corrosiveness, and environmental standard limits. The calculation coefficient for the treatment weight allocation is less than 1, and ammonia is easier to treat than hydrochloric acid; for example, the weight for ammonia is 0.6, and the weight for hydrochloric acid is 0.4. Then, it applies the standard limits for ammonia and hydrochloric acid gases, i.e., the standard limit for ammonia is 0.05%, and the standard limit for hydrochloric acid is 0.0003%. Finally, using the treatment weight allocation as the calculation coefficient, it standardizes the ammonia and hydrochloric acid concentrations in the pre-treatment exhaust gas information. This eliminates the unit differences between ammonia and hydrochloric acid gases and maps the concentration values ​​to a unified dimension. Then, based on the exhaust gas treatment index, it determines whether further exhaust gas treatment is needed, thus ensuring intelligent, precise, and resource-efficient exhaust gas treatment.

[0031] Step S300: Determine whether the exhaust gas treatment index exceeds a predetermined limit.

[0032] Preferably, the calculated exhaust gas treatment index is compared with a preset limit to determine whether deep exhaust gas treatment is required. The preset limit is a safety threshold that meets environmental standards, usually 1. When the exhaust gas treatment index = 1, it means that the exhaust gas concentration just meets the environmental standard limit. If the exhaust gas treatment index does not exceed the preset limit, the exhaust gas is deemed to meet the standard. If the exhaust gas treatment index exceeds the preset limit, the exhaust gas pollution is deemed to exceed the standard.

[0033] Furthermore, step S300 also includes, after determining whether the exhaust gas treatment index exceeds a predetermined limit, if it does not exceed the limit, activating the anti-backflow atomizing spray device in the physical and chemical dual processor to perform primary treatment on the exhaust gas to be treated, thereby obtaining the exhaust gas to be emitted.

[0034] Preferably, if the exhaust gas treatment index does not exceed the predetermined limit, the anti-backflow atomizing spray device in the physicochemical dual processor is activated to perform basic purification treatment on the exhaust gas to be treated, i.e., primary treatment. Through the synergistic effect of physicochemical processes, low-concentration pollutants in the exhaust gas are efficiently removed to ensure that emissions meet standards. Specifically, a one-way valve or U-shaped liquid seal structure is used to prevent backflow of liquids such as spray liquids in the exhaust gas pipeline into the test chamber due to pressure fluctuations, thus avoiding contamination of equipment or samples. The high-pressure nozzles of the anti-backflow atomizing spray device break the liquid into 10-50μm droplets, increasing the gas-liquid contact area, and a packing layer is set in the spray tower to enhance mass transfer efficiency. The absorbent is selected according to different gases, for example, a dilute sulfuric acid solution is selected for ammonia, and an alkaline solution is selected for hydrochloric acid. The exhaust gas to be treated enters the spray tower and comes into countercurrent contact with the atomized droplets. The ammonia or hydrochloric acid gas in the gas is absorbed by the liquid and undergoes a chemical reaction. The purified gas is dehydrated by a demister and becomes the exhaust gas to be discharged, ensuring that low-concentration exhaust gas meets emission standards.

[0035] In step S400, if the limit is exceeded, the physical and chemical dual processor is activated to process the exhaust gas to be processed, and the exhaust gas to be emitted is obtained.

[0036] Step S400 further includes step S410, activating the anti-backflow atomizing spray device in the physical-chemical dual processor to perform primary treatment on the exhaust gas to be treated, obtaining primary exhaust gas; step S420, activating the ammonium sulfate mother liquor countercurrent spray crystallization device in the physical-chemical dual processor to perform secondary treatment on the primary exhaust gas, obtaining secondary exhaust gas; step S430, using the secondary exhaust gas as the exhaust gas to be emitted.

[0037] Preferably, if the exhaust gas treatment index exceeds a predetermined limit, the physicochemical dual processor is activated to employ a two-stage treatment process. Through synergistic physicochemical action, the exhaust gas is purified stage by stage. This includes primary treatment using an anti-backflow atomizing spray device for basic purification, followed by secondary treatment using an ammonium sulfate mother liquor countercurrent spray crystallization device for deep purification, ultimately outputting compliant secondary exhaust gas. Specifically, for low-concentration pollutants, primary treatment using the anti-backflow atomizing spray device removes 80%–90% of readily soluble gases, outputting primary exhaust gas. Then, for residual difficult-to-treat pollutants after primary treatment, such as trace amounts of ammonia and aerosols, secondary treatment using the ammonium sulfate mother liquor countercurrent spray crystallization device achieves near-zero emissions and resource recovery. This involves using saturated ammonium sulfate mother liquor as the spray liquid, spraying from the top of the tower, contacting the rising exhaust gas in a countercurrent manner to extend the contact time. The sulfuric acid dosage is automatically adjusted by a pH sensor, and the ammonia reacts with the H+ in the mother liquor. + The reaction produces (NH4)2SO4 crystals, which are then separated by a centrifuge and used as fertilizer raw materials. The resulting secondary exhaust gas is then used as exhaust gas to be emitted, ensuring environmental compliance while significantly improving economic benefits.

[0038] Furthermore, step S410 also includes that the spray liquid of the anti-backflow atomizing spray device is a predetermined acidic absorbent, and the pH value of the predetermined acidic absorbent is in the range of 2.5 to 3.5; wherein, the preparation method of the predetermined acidic absorbent includes: step a, diluting a predetermined industrial sulfuric acid to a concentration of 13% to obtain a stock absorbent solution; step b, obtaining a predetermined surfactant, and the concentration range of the predetermined surfactant is 0.1% to 0.3%; step c, adding the predetermined surfactant to the stock absorbent solution under a predetermined solution temperature condition to obtain the predetermined acidic absorbent solution.

[0039] Preferably, the spray liquid of the anti-backflow atomizing spray equipment is a predetermined acidic absorbent with a pH range of 2.5 to 3.5 to ensure rapid neutralization of alkaline ammonia. Specifically, a predetermined industrial sulfuric acid with a concentration of 98% is used as raw material and slowly diluted with cold water to a concentration of 13% to obtain the absorbent stock solution. Then, a predetermined surfactant with a concentration range of 0.1% to 0.3% is obtained and added to the absorbent stock solution at a predetermined solution temperature of 25℃ to 35℃ to avoid high-temperature degradation. The surfactant enhances the gas-liquid contact, for example, reducing the surface tension of the solution from 72mN / m to 35mN / m, reducing the atomized droplet size from 50μm to 20μm, increasing the gas-liquid contact area by 300%, and doubling the absorption rate, ultimately obtaining the predetermined acidic absorbent.

[0040] Furthermore, step S420 also includes that the spray liquid of the countercurrent spray crystallization device for ammonium sulfate mother liquor is a predetermined ammonium sulfate solution, and the concentration range of the predetermined ammonium sulfate solution is 15% to 25%.

[0041] Preferably, the spray liquid in the countercurrent spray crystallization equipment for ammonium sulfate mother liquor is a predetermined ammonium sulfate solution, which is used to deeply remove residual ammonia and simultaneously recover ammonium sulfate crystals. The concentration range of the predetermined ammonium sulfate solution is 15% to 25%, ensuring ammonia absorption efficiency and crystallization yield. Furthermore, the predetermined ammonium sulfate solution can be regenerated and reused multiple times, reducing operating costs.

[0042] Furthermore, step S400 also includes step S440, activating the online detector to dynamically and continuously detect the treatment process of the exhaust gas to be treated, and obtaining the online detection time sequence; step S450, visualizing the online detection time sequence to obtain the online detection curve; step S460, determining whether the exhaust gas to be emitted meets the predetermined emission constraints based on the online detection curve; step S470, if it meets the constraints, treating the exhaust gas to be emitted; if it does not meet the constraints, activating the fiber demister to remove aerosol particles from the exhaust gas to be emitted.

[0043] Preferably, the online detectors are activated to dynamically and continuously monitor the treatment process of the exhaust gas. These online detectors include an infrared spectroscopy ammonia analyzer and an electrochemical hydrochloric acid analyzer. Specifically, the infrared spectroscopy ammonia analyzer detects ammonia based on the absorption characteristics of ammonia molecules in a specific infrared band, with a measurement range of 0-50 ppm. The electrochemical hydrochloric acid analyzer detects ammonia based on the current signal generated by the redox reaction of hydrochloric acid gas on the electrode surface, with a measurement range of 0-10 ppm. The data acquisition frequency is ≥1 time / minute to capture transient concentration fluctuations. The ammonia and hydrochloric acid concentration values ​​are then recorded in a time sequence to obtain the online detection timeline. The online detection timeline is then visualized, with detection time as the horizontal axis and gas concentration as the vertical axis, to create an online detection curve, and the national standard limit red line is marked on the graph. The online monitoring curve is then used to determine whether the exhaust gas meets the predetermined emission constraints. The predetermined emission constraints refer to the exhaust gas meeting the emission standards of ammonia concentration ≤20mg / m³ and hydrochloric acid concentration ≤7.5mg / m³ after treatment. If the exhaust gas meets the predetermined emission constraints, the emission valve is opened to directly discharge the exhaust gas. If the exhaust gas does not meet the predetermined emission constraints, i.e., the concentration of ammonia or hydrochloric acid in the exhaust gas exceeds the standard, or there are inhalable particulate matter, such as ammonium sulfate aerosol, the fiber demister is activated to remove aerosol particles from the exhaust gas. This includes a pre-filtration layer to remove particles ≥5μm, a glass fiber layer to capture particles 0.3-5μm, and finally, electrostatic adsorption of ultrafine particles ≤0.3μm on the PTFE membrane surface, ensuring that the emitted gas fully complies with the comprehensive emission standards for air pollutants.

[0044] Further, step S450 also includes step S451, extracting the ammonia concentration time series from the online detection time series; step S452, performing polynomial fitting on the scattered ammonia concentration time series to obtain an ammonia fitting curve; step S453, extracting the hydrochloric acid gas concentration time series from the online detection time series; step S454, performing polynomial fitting on the scattered hydrochloric acid gas concentration time series to obtain a hydrochloric acid gas fitting curve; and step S455, the ammonia fitting curve and the hydrochloric acid gas fitting curve constitute the online detection curve graph.

[0045] Preferably, all ammonia concentration values ​​are extracted from the online detection time-series data to form a time-ammonia concentration scatter plot sequence, i.e., an ammonia concentration time series. Similarly, all hydrochloric acid concentration values ​​are extracted to form a time-hydrochloric acid concentration scatter plot sequence, i.e., a hydrochloric acid concentration time series. Then, polynomial fitting is performed on the scatter plotted ammonia and hydrochloric acid concentration time series respectively to minimize the overall deviation of the curve from all scatter plots, determining two optimal fitting curves: the ammonia fitting curve and the hydrochloric acid fitting curve. The ammonia fitting curve is a smooth trend line generated for the ammonia concentration scatter plot sequence, while the hydrochloric acid fitting curve is an independent trend line generated for the hydrochloric acid gas scatter plot sequence. Finally, the ammonia and hydrochloric acid fitting curves are superimposed on the same coordinate system to form an online detection curve graph, where the horizontal axis represents the detection time and the vertical axis represents the gas concentration, with different colors used to distinguish between the ammonia and hydrochloric acid fitting curves. This ensures intelligent control and precise emission compliance of exhaust gas treatment, improving exhaust gas purification efficiency and environmental performance.

[0046] In the above text, refer to Figure 1 The method for treating the exhaust gas of inorganic gases in a test chamber according to an embodiment of the present invention is described in detail. Next, reference will be made to... Figure 2 This invention describes an inorganic gas exhaust treatment device for a test chamber according to an embodiment of the present invention.

[0047] The inorganic gas exhaust treatment device for the test chamber according to an embodiment of the present invention solves the technical problems existing in the prior art, such as the difficulty in coordinating the exhaust treatment of inorganic gas exhaust from the test chamber and the inability to adaptively adjust treatment parameters according to changes in exhaust gas concentration, resulting in low exhaust gas treatment efficiency, non-compliance with emission standards, and insufficient environmental performance. It achieves the technical effects of intelligent control and precise emission compliance of exhaust gas treatment, and improves exhaust gas purification efficiency and environmental performance. Figure 2 As shown, the inorganic gas exhaust treatment device in the test chamber includes: a sensing and monitoring module 10, an evaluation and analysis module 20, an exhaust gas treatment index judgment module 30, and an exhaust gas treatment module 40.

[0048] The sensing and monitoring module 10 is used to collect inorganic gases in the test chamber to obtain exhaust gas to be treated, and to sense and monitor the exhaust gas to obtain exhaust gas information before treatment; the evaluation and analysis module 20 is used to introduce an exhaust gas evaluation mechanism to evaluate and analyze the exhaust gas information before treatment to obtain an exhaust gas treatment index; the exhaust gas treatment index judgment module 30 is used to determine whether the exhaust gas treatment index exceeds a predetermined limit; the exhaust gas treatment module 40 is used to activate the physical and chemical dual processor to treat the exhaust gas to be treated to obtain exhaust gas to be emitted.

[0049] The specific configuration of the sensing and monitoring module 10 will be described in detail below. The sensing and monitoring module 10 further includes: monitoring the ammonia concentration of the exhaust gas to be treated using an exhaust gas monitoring sensor to obtain the ammonia concentration before treatment; monitoring the hydrochloric acid gas concentration of the exhaust gas to be treated using an exhaust gas monitoring sensor to obtain the hydrochloric acid gas concentration before treatment; the ammonia concentration before treatment and the hydrochloric acid gas concentration before treatment constitute the exhaust gas information before treatment.

[0050] The specific configuration of the evaluation and analysis module 20 will be described in detail below. The evaluation and analysis module 20 further includes: extracting the pre-stored treatment weight allocation in the exhaust gas evaluation mechanism; using the treatment weight allocation as the calculation coefficient, standardizing the ammonia concentration and the hydrochloric acid concentration before treatment to obtain the exhaust gas treatment index; wherein the calculation coefficient of the treatment weight allocation is less than 1.

[0051] The specific configuration of the exhaust gas treatment index judgment module 30 will be described in detail below. The exhaust gas treatment index judgment module 30 further includes: after judging whether the exhaust gas treatment index exceeds a predetermined limit, if it does not exceed the limit, activating the anti-backflow atomizing spray device in the physical and chemical dual processor to perform primary treatment on the exhaust gas to be treated, thereby obtaining the exhaust gas to be emitted.

[0052] The specific configuration of the exhaust gas treatment module 40 will be described in detail below. The exhaust gas treatment module 40 further includes: activating the anti-backflow atomizing spray device in the physical and chemical dual processor to perform primary treatment on the exhaust gas to be treated, obtaining primary exhaust gas; activating the ammonium sulfate mother liquor countercurrent spray crystallization device in the physical and chemical dual processor to perform secondary treatment on the primary exhaust gas, obtaining secondary exhaust gas; and using the secondary exhaust gas as the exhaust gas to be emitted.

[0053] The specific configuration of the exhaust gas treatment module 40 will be described in detail below. The exhaust gas treatment module 40 further includes: the spray liquid of the anti-backflow atomizing spray device is a predetermined acidic absorbent, and the pH value of the predetermined acidic absorbent is in the range of 2.5 to 3.5; wherein, the preparation method of the predetermined acidic absorbent includes: diluting a predetermined industrial sulfuric acid to a concentration of 13% to obtain a stock absorbent solution; obtaining a predetermined surfactant, and the concentration range of the predetermined surfactant is 0.1% to 0.3%; adding the predetermined surfactant to the stock absorbent solution under predetermined solution temperature conditions to obtain the predetermined acidic absorbent solution.

[0054] The specific configuration of the exhaust gas treatment module 40 will be described in detail below. The exhaust gas treatment module 40 further includes: the spray liquid of the ammonium sulfate mother liquor countercurrent spray crystallization device is a predetermined ammonium sulfate solution, and the concentration range of the predetermined ammonium sulfate solution is 15% to 25%.

[0055] The specific configuration of the exhaust gas treatment module 40 will be described in detail below. The exhaust gas treatment module 40 further includes: activating an online detector to dynamically and continuously monitor the treatment process of the exhaust gas to be treated, obtaining an online detection timeline; visualizing the online detection timeline to obtain an online detection curve; determining whether the exhaust gas to be emitted meets a predetermined emission constraint based on the online detection curve; if it does, treating the exhaust gas to be emitted; if it does not, activating a fiber demister to remove aerosol particles from the exhaust gas to be emitted.

[0056] The specific configuration of the exhaust gas treatment module 40 will be described in detail below. The exhaust gas treatment module 40 further includes: extracting the ammonia concentration time series from the online detection time series; performing polynomial fitting on the scattered ammonia concentration time series to obtain an ammonia fitting curve; extracting the hydrochloric acid gas concentration time series from the online detection time series; performing polynomial fitting on the scattered hydrochloric acid gas concentration time series to obtain a hydrochloric acid gas fitting curve; the ammonia fitting curve and the hydrochloric acid gas fitting curve constitute the online detection curve graph.

[0057] The inorganic gas exhaust treatment device in the test chamber provided in this embodiment of the invention can perform the inorganic gas exhaust treatment method in the test chamber provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0058] Although this application makes various references to certain modules in the apparatus according to the embodiments of this application, any number of different modules can be used and run on user terminals and / or servers. The various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional unit are only for easy distinction between each other and are not intended to limit the scope of protection of this invention.

[0059] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for treating the exhaust gas from an inorganic gas chamber, characterized in that, include: Inorganic gases are collected in the test chamber to obtain exhaust gas to be treated, and the exhaust gas to be treated is sensed and monitored. The ammonia concentration of the exhaust gas to be treated is monitored by the exhaust gas monitoring sensor to obtain the ammonia concentration before treatment. The hydrochloric acid concentration of the exhaust gas to be treated is monitored by the exhaust gas monitoring sensor to obtain the hydrochloric acid concentration before treatment. The ammonia concentration before treatment and the hydrochloric acid concentration before treatment constitute the exhaust gas information before treatment. An exhaust gas assessment mechanism is introduced to evaluate and analyze the exhaust gas information before treatment. The pre-stored treatment weight allocation in the exhaust gas assessment mechanism is extracted. The treatment weight allocation is used as the calculation coefficient to standardize the ammonia concentration and hydrochloric acid concentration before treatment to obtain the exhaust gas treatment index. The calculation coefficient of the treatment weight allocation is less than 1. Determine whether the exhaust gas treatment index exceeds a predetermined limit; If the limit is not exceeded, the anti-backflow atomizing spray device in the physical and chemical dual processor is activated to perform primary treatment on the exhaust gas to be treated, and the primary exhaust gas is used as the exhaust gas to be emitted. If the emission exceeds the limit, the ammonium sulfate mother liquor countercurrent spray crystallization device in the physical and chemical dual processor is further activated to perform secondary treatment on the primary tail gas to obtain secondary tail gas, which is then used as the tail gas to be emitted.

2. The method for treating inorganic gas exhaust from the test chamber as described in claim 1, characterized in that, The spray liquid of the anti-backflow atomizing spray device is a predetermined acidic absorbent liquid, and the pH value of the predetermined acidic absorbent liquid is in the range of 2.5 to 3.

5. The method for preparing the predetermined acidic absorbent solution includes: The predetermined industrial sulfuric acid was diluted to a concentration of 13% to obtain the original absorbent solution; A predetermined surfactant is obtained, wherein the concentration of the predetermined surfactant is in the range of 0.1% to 0.3%; Under predetermined solution temperature conditions, the predetermined surfactant is added to the original absorbent solution to obtain the predetermined acidic absorbent solution.

3. The method for treating inorganic gas exhaust from the test chamber as described in claim 1, characterized in that, The spray liquid in the countercurrent spray crystallization equipment for ammonium sulfate mother liquor is a predetermined ammonium sulfate solution, and the concentration range of the predetermined ammonium sulfate solution is 15% to 25%.

4. The method for treating inorganic gas exhaust from the test chamber as described in claim 1, characterized in that, Also includes: The online detector is activated to dynamically and continuously monitor the treatment process of the exhaust gas to be treated, and the online detection time sequence is obtained. The online detection time series is visualized to obtain an online detection curve. Based on the online detection curve, it is determined whether the exhaust gas to be emitted meets the predetermined emission constraints. If the emission target is met, the exhaust gas to be emitted is treated; if the target is not met, the fiber demister is activated to remove aerosol particles from the exhaust gas to be emitted.

5. The method for treating inorganic gas exhaust from the test chamber as described in claim 4, characterized in that, The online detection time series is visualized to obtain an online detection curve, including: Extract the ammonia concentration time series from the online detection time series; The ammonia concentration time series after scattering was subjected to polynomial fitting to obtain the ammonia fitting curve; Extract the hydrochloric acid gas concentration time series from the online detection time series; The hydrochloric acid gas concentration time series after scattering was subjected to polynomial fitting to obtain the hydrochloric acid gas fitting curve. The ammonia gas fitting curve and the hydrochloric acid gas fitting curve constitute the online detection curve.

6. An inorganic gas exhaust treatment device for the test chamber, characterized in that, The device is used to implement the inorganic gas exhaust treatment method in the test chamber according to any one of claims 1 to 5, the device comprising: The sensing and monitoring module is used to collect inorganic gases in the test chamber to obtain exhaust gas to be treated, and to sense and monitor the exhaust gas to obtain exhaust gas information before treatment. The evaluation and analysis module is used to introduce an exhaust gas evaluation mechanism to evaluate and analyze the exhaust gas information before treatment, and obtain the exhaust gas treatment index. The exhaust gas treatment index determination module is used to determine whether the exhaust gas treatment index exceeds a predetermined limit. The exhaust gas treatment module is used to activate the physical and chemical dual processor to treat the exhaust gas to be treated, and obtain the exhaust gas to be emitted.

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